sar is a highly diverse group of protists defined by dna similarities determined through whole-genome analysis of various organisms in the group. which of the following conclusions could be drawn from this information?
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Solved Part A SAR is a highly diverse group of protists
Answer to Solved Part A SAR is a highly diverse group of protists
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Biology II
Memorize flashcards and build a practice test to quiz yourself before your exam. Start studying the Biology II - Concept 28.3: SAR is a highly diverse group of protists defined by DNA similarities flashcards containing study terms like What does morphological and DNA data suggest about the relationships between the simularities in the algae and plant lineages?, What do brown algae lack that other plants have?, What is one other unique structure in brown algae? and more.
Biology II - Concept 28.3: SAR is a highly diverse group of protists defined by DNA similarities
What does morphological and DNA data suggest about the relationships between the simularities in the algae and plant lineages?
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They are analogous
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What do brown algae lack that other plants have?
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Tissues and Organs
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What does morphological and DNA data suggest about the relationships between the simularities in the algae and plant lineages?
They are analogous
What do brown algae lack that other plants have?
Tissues and Organs
What is one other unique structure in brown algae?
Sieve tubes (Food conducting cells)
What structure has channels through cell walls that connect the cytoplasms of adjacent cells?
The Plasmodesmata
What other structure is unique to brown algae?
Plasmodesmata
Where is the meristem located on brown algae?
Between the blade and the stipe
What common plants are made up of brown algae?
- Kelp - Seaweed
What gives brown algae it's color?
The carotenoids in their plastids
Where are brown algae commonly found?
Temperate coast with cold currents
What are two characteristics of brown algae?
- All are nulticellular
- Most are marine
What algae is concidered the largest and most complex form of algae?
Brown Algae
What supergroup contains three major clades of protistsβthe stramenopiles, alveolates, and rhizariansβform a monophyletic supergroup?
SAR
What clades emerged after a common ancestor of these two clades engulfed a single-celled, photosynthetic red alga.
- stramenopiles - alveolates
Red algae emerged due to a common ancestor engulfing a photosynthetic prokaryote, and stramenopiles and alveolates emerged because their common ancestors engulfed a single celled red algae. What term do these events represent?
secondary endosymbiosis
What subgroup contains some of the most important photosynthetic organisms on the planet?
stramenopiles
What characteristics are unique to the stramenopile subgroup?
- One flagellum has numerous fine, hairlike projections
- The other is shorter "smooth" flagellum
What clades are in the subgroup stramenopile?
- diatoms - golden algae - brown algae
What was used to cause a bloom when studying blooming patterns?
Iron
syngamy (Diatoms Life Cycle)
The fusion of two gametes in fertilization.
diatom life cycle
- Sexual/Asexual (Primarily Asexual)
- Diplonic
What are some uses for Diatomaceous Earth?
Pool filters, Insect killer/repelant, ect.
What important economic good do Diatoms make up?
Diatomaceous Earth
How could a bloom season for Diatoms reduce global warming?
The CO2 would be pumped to the ocean floor instead of into the atmosphere.
Affter the death of a Diatom, what part of the ocean recives CO2 due to the bacteria not decomposing the decesed Diatom till decades after it passes?
The ocean floor
How long does it take for Diatoms to reach the ocean floor after their death?
decades
What environmental effect do Diatoms have?
Regulation of CO2
What protist is photosynthetic, a unicellular algae, has a glass-like wall, and is the most abundant organism within oceans?
Diatoms
In Diatoms, what makes up the glass-like wall?
Silicon dioxide
What speciffic part is unique to brown algae?
Meristem
What are some of the economic values of brown algae?
- Food - Source of aglin
What products are made with algin?
- Emulsifier - Stabilizer - Wound dressings
What is the most complex life cycle?
Alteration of Generations
What is the genus of brown algae that uses the Alteration of Generations life cycle?
Laminaria
What is the diploid individual in the Alteration of Generations life cycle and what does it produce?
The sporophyte, spores.
What are the haploid spore cells called in the Alteration of Generations life cycle?
zoospores
What do the zoospores grow into during Alteration of Generations?
Multicellular Female and Male gametophytes
What do the gameophytes produce during Alteration of Generations?
Gametes.
What is produced after the union of the two gametes? (Ferilization)
A zygote
What does a zygote produce to finish off the Alteration of Generations life cycle?
A multicellular sporeophyte.
Laminaria Life Cycle
Alteration of Generations
What term is used to describe when the sporophyte and gametophyte are structurally different during the Alteration of Generations life cycle?
SAR is a highly diverse group of protists defined by DNA similarities determined through whole
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JULY 28, 2021 BY QUIZS
SAR is a highly diverse group of protists defined by DNA similarities determined through whole-genome analysis of various organisms in the group. Which of the following conclusions could be drawn
SAR is a highly diverse group of protists defined by DNA similarities determined through whole-genome analysis of various organisms in the group. Which of the following conclusions could be drawn from this information?
A) SAR is a paraphyletic group
B) SAR is a monophyletic group
C) SAR includes organisms that have different common ancestors
D) the common ancestor of the members of this group arose relatively recently in evolutionary history
Guys, does anyone know the answer?